The chief herald of Scotland is Lyon King of Arms. Until 1866 he
had a deputy, called Lyon Depute; when the then-Lyon Depute was appointed
Lyon King of Arms without replacement in 1866, the two offices were thought
to have been merged. The office was thoroughly reformed by an Act of 1867.

A list of heralds is given in John H. Stevenson's Heraldry in Scotland (1914).
See also Sir Francis James Grant: The Court of the Lord Lyon,
list of His Majesty's officers of arms and other officials with
genealogical notes, 1318-1945. Edinburgh, Printed for the
Scottish Record Society by J. Skinner, 1945.

The current Lyon, Robin O. Blair, a retired lawyer, was a partner in Dundas and
Wilson solicitors. He took office in February 2001.

The previous Lyon, second son of Sir Thomas Innes of Learney, had a rapid
career in Scots heraldry under the tutelage of his father: Falkland
Pursuivant Extraordinary in 1957 (at the extraordinary age of 19!),
Carrick Pursuivant 1958-72, Lyon Clerk 1966-81, Marchmont Herald 1972-81,
Lord Lyon in 1981. In 1978 he produced a 3d edition of his father's
Scots Heraldry.
There is some
biographical information on the Innes (which may or may not
be accurate; there seems to be a confusion between "baron" and "baronet"!).

Note that, since the reform of 1867, the office has been taken very seriously
by its holders, and most Lyons since that date have been scholars of repute in
their own right (Burnett, who contributed to Woodward's Treatise for
the Scottish sections; Paul; Grant; Innes of Learney; Innes of Edingight)>